Double twist twisting spindle



Jan. 23, 1940. o. BOCHMANN 2,187,996

DOUBLE TWIST TWIS'I'ING SPINDLE Filed Dec. 12, 1938 Inventor:

Law-- Patented Jan. 23, 1940 DOUBLE TWIST TWISTING SPINDLE Otto Bochmann, Remscheid-Lennep, Germany,

assignor to Barmer Maschinenfabrik Aktiengesellschaft, Wuppertal-Oberbarmen, Germany Application December 12, 1938, Serial No. 245,245 In Germany December 18, 1937 4 Claims.

This invention relates to a double twist twisting spindle in which in known manner the thread unwinding from a stationary supply bobbin is conducted through the hollow twisting spindle and thence passes in balloon to the winding bobbin. On this travel a certain tension is imparted to the thread before it enters the hollow twisting spindle to attain which tension a brake is usually provided in the stationary bobbin holder. The known double twist twisting spindles of this type are open to the objection that, as soon as the thread breaks in the balloon, the thread continues to be pulled ofi the supply bobbin by the broken thread being drawn outwards by centrifugal force during the rotation of the spindle. This broken thread then winds around the thread accumulating ring, with the result that the work of the operator is made more diihcult owing to his having to remove the thread and the thread accumulating ring may become damaged. To remove the thread it is mostly necessary to cut it through which may easily result in damage to the thread accumulating ring to such a extent that it is inapt for further use. I

'Io'overcome this objection it is proposed'according to the invention to arrange a thread catching device within the stationary bobbin holder. Apiece of fur or felt is preferably used as thread catching device. when a thread brake is employed this piece of lap or felt is preferably .35 that, as soon as a thread breaks, the broker? thread is held so that no -more thread is pulled off the bobbin. It is known that, when a thread breaks, the yarn runs upwards. However, the windings are crowded together on a short piece of thread-in a very short time in the interior of the spindle, as the broken thread is drawn ofl only slowly. By this accumulation of the windings the thread is twisted on the hairs of the piece of fur or felt so that no more thread will be drawn off the supply bobbin. Another advantage is that the thread accumulating ring will nolongerbe woundwith threadandconlequently is not exposed to damage by forcible removal of the thread and moreover the attendance is considerably facilitated.

An embodiment of the invention is illustrated by way of example in the only figure of the ac- 5 companying drawing, which shows a portion of a double twist twisting spindle in longitudinal section.

The thread 2 unwinding from the supply bobbin I passes through the thread brake 3 into the 10 interior of the stationary bobbin holder 4 and is thence conducted to the hollow spindle. Be-- low the brake a spindle 6 enwrapped with a piece 5 of fur or felt is arranged, over which piece the thread runs. If a thread breaks in the balloon 15 the yarn runs up inside the bobbin holder wrapping itself in close windings on a short length of thread in the spindle and twisting on the tiny hairs of the piece of fur or felt. Consequently, when a thread breaks, fresh thread can- 20 not be drawn off the supply bobbin. v

I claim:

1. A double twist twisting spindle comprising in combination a stationary bobbin holder, a thread brake in this holder, 2. spindle in the 25 holder under said thread brake and a piece of hairy material wound around said spindle. I 2. A double twisting spindle, comprising a stationary bobbin holder, a thread brake in said holder, and a thread catching device arranged 30 within said holder below said brake and adapted to catch and hold the broken thread end in the event of thread breakage.

3. A double twisting spindle, comprising a stationary bobbin holder, a thread brake in said 35 holder, and a piece of fur arranged within said holder below saidfbrake and adapted to-catch and hold the broken thread end in the event of thread breakage.

4. A double twisting spindle, comprising a sta- 4 tionary bobbin holder, 9. thread brake in said holder, and a piece of felt arranged within said holder below said brake and adapted to catch and hold the broken thread end in the event of thread breakage. 45

0'1'1'0 BOCEMANN. 

